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mhl

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mhl 2 years ago
parent ec44549113
commit 586bb045dc
10 changed files with 633 additions and 309 deletions
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src/Notes-master1/app/src/main/java/net/micode/notes/ui/AlarmAlertActivity.java
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@ -15,7 +15,7 @@
*/ */
package net.micode.notes.ui; package net.micode.notes.ui;
import android.app.Activity; import android.app.Activity;
import android.app.AlertDialog; import android.app.AlertDialog;
import android.content.Context; import android.content.Context;
@ -32,81 +32,108 @@ import android.os.PowerManager;
import android.provider.Settings; import android.provider.Settings;
import android.view.Window; import android.view.Window;
import android.view.WindowManager; import android.view.WindowManager;
import net.micode.notes.R; import net.micode.notes.R;
import net.micode.notes.data.Notes; import net.micode.notes.data.Notes;
import net.micode.notes.tool.DataUtils; import net.micode.notes.tool.DataUtils;
import java.io.IOException; import java.io.IOException;
public class AlarmAlertActivity extends Activity implements OnClickListener, OnDismissListener { public class AlarmAlertActivity extends Activity implements OnClickListener, OnDismissListener {
private long mNoteId; private long mNoteId; //文本在数据库存储中的ID号
private String mSnippet; private String mSnippet; //闹钟提示时出现的文本片段
private static final int SNIPPET_PREW_MAX_LEN = 60; private static final int SNIPPET_PREW_MAX_LEN = 60;
MediaPlayer mPlayer; MediaPlayer mPlayer;
@Override @Override
protected void onCreate(Bundle savedInstanceState) { protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState); super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE); //Bundle类型的数据与Map类型的数据相似，都是以key-value的形式存储数据的
//onsaveInstanceState方法是用来保存Activity的状态的
//能从onCreate的参数savedInsanceState中获得状态数据
requestWindowFeature(Window.FEATURE_NO_TITLE);
// 请求无标题的窗口特性
final Window win = getWindow(); final Window win = getWindow();
win.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED); win.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED);
// 如果屏幕关闭，添加一些窗口标志，以保持屏幕开启
if (!isScreenOn()) { if (!isScreenOn()) {
win.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON win.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON
//保持窗体点亮
| WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON | WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON
//将窗体点亮
| WindowManager.LayoutParams.FLAG_ALLOW_LOCK_WHILE_SCREEN_ON | WindowManager.LayoutParams.FLAG_ALLOW_LOCK_WHILE_SCREEN_ON
//允许窗体点亮时锁屏
| WindowManager.LayoutParams.FLAG_LAYOUT_INSET_DECOR); | WindowManager.LayoutParams.FLAG_LAYOUT_INSET_DECOR);
} }//在手机锁屏后如果到了闹钟提示时间，点亮屏幕
Intent intent = getIntent(); Intent intent = getIntent();
//获取传递给活动的Intent
try { try {
mNoteId = Long.valueOf(intent.getData().getPathSegments().get(1)); mNoteId = Long.valueOf(intent.getData().getPathSegments().get(1));
//从Intent中提取文本的ID号
mSnippet = DataUtils.getSnippetById(this.getContentResolver(), mNoteId); mSnippet = DataUtils.getSnippetById(this.getContentResolver(), mNoteId);
//根据ID从数据库中获取标签的内容；
//getContentResolver（）是实现数据共享，实例存储。
mSnippet = mSnippet.length() > SNIPPET_PREW_MAX_LEN ? mSnippet.substring(0, mSnippet = mSnippet.length() > SNIPPET_PREW_MAX_LEN ? mSnippet.substring(0,
SNIPPET_PREW_MAX_LEN) + getResources().getString(R.string.notelist_string_info) SNIPPET_PREW_MAX_LEN) + getResources().getString(R.string.notelist_string_info)
: mSnippet; : mSnippet;
// 如果文本片段长度大于指定长度，进行截断，并添加后缀
} catch (IllegalArgumentException e) { } catch (IllegalArgumentException e) {
e.printStackTrace(); e.printStackTrace();
return; return;
} }
// 创建MediaPlayer实例
mPlayer = new MediaPlayer(); mPlayer = new MediaPlayer();
// 如果文本在数据库中可见，则显示对话框并播放闹钟声音
if (DataUtils.visibleInNoteDatabase(getContentResolver(), mNoteId, Notes.TYPE_NOTE)) { if (DataUtils.visibleInNoteDatabase(getContentResolver(), mNoteId, Notes.TYPE_NOTE)) {
showActionDialog(); showActionDialog();
//弹出对话框
playAlarmSound(); playAlarmSound();
//闹钟提示音激发
} else { } else {
finish(); finish();
//完成闹钟动作
} }
} }
private boolean isScreenOn() { private boolean isScreenOn() {
PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE); PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
return pm.isScreenOn(); return pm.isScreenOn();
} }//判断屏幕是否锁屏，调用系统函数判断，最后返回值是布尔类型
private void playAlarmSound() { private void playAlarmSound() {
//闹钟提示音激发
Uri url = RingtoneManager.getActualDefaultRingtoneUri(this, RingtoneManager.TYPE_ALARM); Uri url = RingtoneManager.getActualDefaultRingtoneUri(this, RingtoneManager.TYPE_ALARM);
//调用系统的铃声管理URI，得到闹钟提示音,获取静音模式下受影响的音频流
int silentModeStreams = Settings.System.getInt(getContentResolver(), int silentModeStreams = Settings.System.getInt(getContentResolver(),
Settings.System.MODE_RINGER_STREAMS_AFFECTED, 0); Settings.System.MODE_RINGER_STREAMS_AFFECTED, 0);
// 设置MediaPlayer的音频流类型
if ((silentModeStreams & (1 << AudioManager.STREAM_ALARM)) != 0) { if ((silentModeStreams & (1 << AudioManager.STREAM_ALARM)) != 0) {
mPlayer.setAudioStreamType(silentModeStreams); mPlayer.setAudioStreamType(silentModeStreams);
} else { } else {
mPlayer.setAudioStreamType(AudioManager.STREAM_ALARM); mPlayer.setAudioStreamType(AudioManager.STREAM_ALARM);
} }
// 设置MediaPlayer的数据源，准备并播放音频
try { try {
mPlayer.setDataSource(this, url); mPlayer.setDataSource(this, url);
mPlayer.prepare(); //方法：setDataSource(Context context, Uri uri)
mPlayer.setLooping(true); //解释：无返回值，设置多媒体数据来源【根据 Uri】
mPlayer.start(); mPlayer.prepare();//准备同步
mPlayer.setLooping(true);//设置是否循环播放
mPlayer.start();//开始播放
} catch (IllegalArgumentException e) { } catch (IllegalArgumentException e) {
// TODO Auto-generated catch block // TODO Auto-generated catch block
e.printStackTrace(); e.printStackTrace();
//e.printStackTrace()函数功能是抛出异常， 还将显示出更深的调用信息
//System.out.println(e)，这个方法打印出异常，并且输出在哪里出现的异常
} catch (SecurityException e) { } catch (SecurityException e) {
// TODO Auto-generated catch block // TODO Auto-generated catch block
e.printStackTrace(); e.printStackTrace();
@ -118,41 +145,62 @@ public class AlarmAlertActivity extends Activity implements OnClickListener, OnD
e.printStackTrace(); e.printStackTrace();
} }
} }
// 显示操作对话框
private void showActionDialog() { private void showActionDialog() {
AlertDialog.Builder dialog = new AlertDialog.Builder(this); AlertDialog.Builder dialog = new AlertDialog.Builder(this);
//AlertDialog的构造方法全部是Protected的
//所以不能直接通过new一个AlertDialog来创建出一个AlertDialog。
//要创建一个AlertDialog，就要用到AlertDialog.Builder中的create()方法
//如这里的dialog就是新建了一个AlertDialog
dialog.setTitle(R.string.app_name); dialog.setTitle(R.string.app_name);
//为对话框设置标题
dialog.setMessage(mSnippet); dialog.setMessage(mSnippet);
//为对话框设置内容
dialog.setPositiveButton(R.string.notealert_ok, this); dialog.setPositiveButton(R.string.notealert_ok, this);
//给对话框添加"Yes"按钮
if (isScreenOn()) { if (isScreenOn()) {
dialog.setNegativeButton(R.string.notealert_enter, this); dialog.setNegativeButton(R.string.notealert_enter, this);
} }// 如果屏幕开启，添加取消按钮
dialog.show().setOnDismissListener(this); dialog.show().setOnDismissListener(this);
// 显示对话框并设置对话框的Dismiss监听器
} }
public void onClick(DialogInterface dialog, int which) { public void onClick(DialogInterface dialog, int which) {
switch (which) { switch (which) {
//用which来选择click后下一步的操作
case DialogInterface.BUTTON_NEGATIVE: case DialogInterface.BUTTON_NEGATIVE:
//这是取消操作
Intent intent = new Intent(this, NoteEditActivity.class); Intent intent = new Intent(this, NoteEditActivity.class);
//实现两个类间的数据传输，启动NoteEditActivity以编辑文本
intent.setAction(Intent.ACTION_VIEW); intent.setAction(Intent.ACTION_VIEW);
//设置动作属性
intent.putExtra(Intent.EXTRA_UID, mNoteId); intent.putExtra(Intent.EXTRA_UID, mNoteId);
//实现key-value对
//EXTRA_UID为key；mNoteId为键
startActivity(intent); startActivity(intent);
//开始动作
break; break;
default: default:
//这是确定操作
break; break;
} }// 对话框按钮点击事件处理
} }
public void onDismiss(DialogInterface dialog) { public void onDismiss(DialogInterface dialog) {
//忽略
stopAlarmSound(); stopAlarmSound();
//停止闹钟声音
finish(); finish();
} //完成该动作
}// 对话框Dismiss事件处理
private void stopAlarmSound() { private void stopAlarmSound() {
if (mPlayer != null) { if (mPlayer != null) {
mPlayer.stop(); mPlayer.stop();
//停止播放
mPlayer.release(); mPlayer.release();
//释放MediaPlayer对象
mPlayer = null; mPlayer = null;
} }
} }// 停止播放闹钟声音
}

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src/Notes-master1/app/src/main/java/net/micode/notes/ui/AlarmInitReceiver.java
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@ -14,8 +14,9 @@
* limitations under the License. * limitations under the License.
*/ */
//这段代码是一个BroadcastReceiver，在系统启动时被触发。它查询数据库中需要提醒的笔记，然后为每个笔记设置闹钟。
package net.micode.notes.ui; package net.micode.notes.ui;
import android.app.AlarmManager; import android.app.AlarmManager;
import android.app.PendingIntent; import android.app.PendingIntent;
import android.content.BroadcastReceiver; import android.content.BroadcastReceiver;
@ -23,43 +24,59 @@ import android.content.ContentUris;
import android.content.Context; import android.content.Context;
import android.content.Intent; import android.content.Intent;
import android.database.Cursor; import android.database.Cursor;
import net.micode.notes.data.Notes; import net.micode.notes.data.Notes;
import net.micode.notes.data.Notes.NoteColumns; import net.micode.notes.data.Notes.NoteColumns;
public class AlarmInitReceiver extends BroadcastReceiver { public class AlarmInitReceiver extends BroadcastReceiver {
private static final String [] PROJECTION = new String [] { private static final String [] PROJECTION = new String [] {
NoteColumns.ID, NoteColumns.ID,
NoteColumns.ALERTED_DATE NoteColumns.ALERTED_DATE
}; };
//对数据库的操作，调用标签ID和闹钟时间;查询投影，定义了需要获取的列
private static final int COLUMN_ID = 0; private static final int COLUMN_ID = 0;
private static final int COLUMN_ALERTED_DATE = 1; private static final int COLUMN_ALERTED_DATE = 1;
// 列的索引
@Override @Override
public void onReceive(Context context, Intent intent) { public void onReceive(Context context, Intent intent) {
long currentDate = System.currentTimeMillis(); long currentDate = System.currentTimeMillis();
//获取当前时间。System.currentTimeMillis()产生一个当前的毫秒
//这个毫秒其实就是自1970年1月1日0时起的毫秒数
Cursor c = context.getContentResolver().query(Notes.CONTENT_NOTE_URI, Cursor c = context.getContentResolver().query(Notes.CONTENT_NOTE_URI,
PROJECTION, PROJECTION,
NoteColumns.ALERTED_DATE + ">? AND " + NoteColumns.TYPE + "=" + Notes.TYPE_NOTE, NoteColumns.ALERTED_DATE + ">? AND " + NoteColumns.TYPE + "=" + Notes.TYPE_NOTE,
new String[] { String.valueOf(currentDate) }, new String[] { String.valueOf(currentDate) },
//将long变量currentDate转化为字符串
null); null);
//Cursor在这里的作用是通过查找数据库中的标签内容，找到和当前系统时间相等的标签
if (c != null) { if (c != null) {
if (c.moveToFirst()) { if (c.moveToFirst()) {
do { do {
long alertDate = c.getLong(COLUMN_ALERTED_DATE); long alertDate = c.getLong(COLUMN_ALERTED_DATE);
// 获取提醒时间和笔记ID
Intent sender = new Intent(context, AlarmReceiver.class); Intent sender = new Intent(context, AlarmReceiver.class);
sender.setData(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, c.getLong(COLUMN_ID))); sender.setData(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, c.getLong(COLUMN_ID)));
// 创建用于触发闹钟的Intent
PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, sender, 0); PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, sender, 0);
AlarmManager alermManager = (AlarmManager) context // 创建PendingIntent，用于启动AlarmReceiver
.getSystemService(Context.ALARM_SERVICE);
AlarmManager alermManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
// 获取AlarmManager
alermManager.set(AlarmManager.RTC_WAKEUP, alertDate, pendingIntent); alermManager.set(AlarmManager.RTC_WAKEUP, alertDate, pendingIntent);
// 设置闹钟，在提醒时间触发
} while (c.moveToNext()); } while (c.moveToNext());
} }
c.close(); c.close();
} }
//然而通过网上查找资料发现，对于闹钟机制的启动，通常需要上面的几个步骤
//如新建Intent、PendingIntent以及AlarmManager等
//这里就是根据数据库里的闹钟时间创建一个闹钟机制
} }
} }

11
src/Notes-master1/app/src/main/java/net/micode/notes/ui/AlarmReceiver.java
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@ -15,16 +15,21 @@
*/ */
package net.micode.notes.ui; package net.micode.notes.ui;
import android.content.BroadcastReceiver; import android.content.BroadcastReceiver;
import android.content.Context; import android.content.Context;
import android.content.Intent; import android.content.Intent;
public class AlarmReceiver extends BroadcastReceiver { public class AlarmReceiver extends BroadcastReceiver {
@Override @Override
public void onReceive(Context context, Intent intent) { public void onReceive(Context context, Intent intent) {
intent.setClass(context, AlarmAlertActivity.class); intent.setClass(context, AlarmAlertActivity.class);
//启动AlarmAlertActivity
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
//activity要存在于activity的栈中，而非activity的途径启动activity时必然不存在一个activity的栈
//所以要新起一个栈装入启动的activity
context.startActivity(intent); context.startActivity(intent);
} }
} }
//这是实现alarm这个功能最接近用户层的包，基于上面的两个包，
//作用还需要深究但是对于setClass和addFlags的

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src/Notes-master1/app/src/main/java/net/micode/notes/ui/DateTimePicker.java
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@ -15,23 +15,24 @@
*/ */
package net.micode.notes.ui; package net.micode.notes.ui;
import java.text.DateFormatSymbols; import java.text.DateFormatSymbols;
import java.util.Calendar; import java.util.Calendar;
import net.micode.notes.R; import net.micode.notes.R;
import android.content.Context; import android.content.Context;
import android.text.format.DateFormat; import android.text.format.DateFormat;
import android.view.View; import android.view.View;
import android.widget.FrameLayout; import android.widget.FrameLayout;
import android.widget.NumberPicker; import android.widget.NumberPicker;
public class DateTimePicker extends FrameLayout { public class DateTimePicker extends FrameLayout {
//FrameLayout是布局模板之一
//所有的子元素全部在屏幕的右上方
private static final boolean DEFAULT_ENABLE_STATE = true; private static final boolean DEFAULT_ENABLE_STATE = true;
private static final int HOURS_IN_HALF_DAY = 12; private static final int HOURS_IN_HALF_DAY = 12;
private static final int HOURS_IN_ALL_DAY = 24; private static final int HOURS_IN_ALL_DAY = 24;
private static final int DAYS_IN_ALL_WEEK = 7; private static final int DAYS_IN_ALL_WEEK = 7;
@ -45,25 +46,27 @@ public class DateTimePicker extends FrameLayout {
private static final int MINUT_SPINNER_MAX_VAL = 59; private static final int MINUT_SPINNER_MAX_VAL = 59;
private static final int AMPM_SPINNER_MIN_VAL = 0; private static final int AMPM_SPINNER_MIN_VAL = 0;
private static final int AMPM_SPINNER_MAX_VAL = 1; private static final int AMPM_SPINNER_MAX_VAL = 1;
//初始化控件
private final NumberPicker mDateSpinner; private final NumberPicker mDateSpinner;
private final NumberPicker mHourSpinner; private final NumberPicker mHourSpinner;
private final NumberPicker mMinuteSpinner; private final NumberPicker mMinuteSpinner;
private final NumberPicker mAmPmSpinner; private final NumberPicker mAmPmSpinner;
//NumberPicker是数字选择器
//这里定义的四个变量全部是在设置闹钟时需要选择的变量（如日期、时、分、上午或者下午）
private Calendar mDate; private Calendar mDate;
//定义了Calendar类型的变量mDate，用于操作时间
private String[] mDateDisplayValues = new String[DAYS_IN_ALL_WEEK]; private String[] mDateDisplayValues = new String[DAYS_IN_ALL_WEEK];
private boolean mIsAm; private boolean mIsAm;
private boolean mIs24HourView; private boolean mIs24HourView;
private boolean mIsEnabled = DEFAULT_ENABLE_STATE; private boolean mIsEnabled = DEFAULT_ENABLE_STATE;
private boolean mInitialising; private boolean mInitialising;
private OnDateTimeChangedListener mOnDateTimeChangedListener; private OnDateTimeChangedListener mOnDateTimeChangedListener;
private NumberPicker.OnValueChangeListener mOnDateChangedListener = new NumberPicker.OnValueChangeListener() { private NumberPicker.OnValueChangeListener mOnDateChangedListener = new NumberPicker.OnValueChangeListener() {
@Override @Override
public void onValueChange(NumberPicker picker, int oldVal, int newVal) { public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
@ -71,41 +74,49 @@ public class DateTimePicker extends FrameLayout {
updateDateControl(); updateDateControl();
onDateTimeChanged(); onDateTimeChanged();
} }
}; };//OnValueChangeListener，这是时间改变监听器，这里主要是对日期的监听
//将现在日期的值传递给mDate；updateDateControl是同步操作
private NumberPicker.OnValueChangeListener mOnHourChangedListener = new NumberPicker.OnValueChangeListener() { private NumberPicker.OnValueChangeListener mOnHourChangedListener = new NumberPicker.OnValueChangeListener() {
@Override //这里是对 小时（Hour） 的监听
@Override
public void onValueChange(NumberPicker picker, int oldVal, int newVal) { public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
boolean isDateChanged = false; boolean isDateChanged = false;
Calendar cal = Calendar.getInstance(); Calendar cal = Calendar.getInstance();
//声明一个Calendar的变量cal，便于后续的操作
if (!mIs24HourView) { if (!mIs24HourView) {
if (!mIsAm && oldVal == HOURS_IN_HALF_DAY - 1 && newVal == HOURS_IN_HALF_DAY) { if (!mIsAm && oldVal == HOURS_IN_HALF_DAY - 1 && newVal == HOURS_IN_HALF_DAY) {
cal.setTimeInMillis(mDate.getTimeInMillis()); cal.setTimeInMillis(mDate.getTimeInMillis());
cal.add(Calendar.DAY_OF_YEAR, 1); cal.add(Calendar.DAY_OF_YEAR, 1);
isDateChanged = true; isDateChanged = true;
//这里是对于12小时制时，晚上11点和12点交替时对日期的更改
} else if (mIsAm && oldVal == HOURS_IN_HALF_DAY && newVal == HOURS_IN_HALF_DAY - 1) { } else if (mIsAm && oldVal == HOURS_IN_HALF_DAY && newVal == HOURS_IN_HALF_DAY - 1) {
cal.setTimeInMillis(mDate.getTimeInMillis()); cal.setTimeInMillis(mDate.getTimeInMillis());
cal.add(Calendar.DAY_OF_YEAR, -1); cal.add(Calendar.DAY_OF_YEAR, -1);
isDateChanged = true; isDateChanged = true;
} }
//这里是对于12小时制时，凌晨11点和12点交替时对日期的更改
if (oldVal == HOURS_IN_HALF_DAY - 1 && newVal == HOURS_IN_HALF_DAY || if (oldVal == HOURS_IN_HALF_DAY - 1 && newVal == HOURS_IN_HALF_DAY ||
oldVal == HOURS_IN_HALF_DAY && newVal == HOURS_IN_HALF_DAY - 1) { oldVal == HOURS_IN_HALF_DAY && newVal == HOURS_IN_HALF_DAY - 1) {
mIsAm = !mIsAm; mIsAm = !mIsAm;
updateAmPmControl(); updateAmPmControl();
} }//这里是对于12小时制时，中午11点和12点交替时对AM和PM的更改
} else { } else {
if (oldVal == HOURS_IN_ALL_DAY - 1 && newVal == 0) { if (oldVal == HOURS_IN_ALL_DAY - 1 && newVal == 0) {
cal.setTimeInMillis(mDate.getTimeInMillis()); cal.setTimeInMillis(mDate.getTimeInMillis());
cal.add(Calendar.DAY_OF_YEAR, 1); cal.add(Calendar.DAY_OF_YEAR, 1);
isDateChanged = true; isDateChanged = true;
//这里是对于24小时制时，晚上11点和12点交替时对日期的更改
} else if (oldVal == 0 && newVal == HOURS_IN_ALL_DAY - 1) { } else if (oldVal == 0 && newVal == HOURS_IN_ALL_DAY - 1) {
cal.setTimeInMillis(mDate.getTimeInMillis()); cal.setTimeInMillis(mDate.getTimeInMillis());
cal.add(Calendar.DAY_OF_YEAR, -1); cal.add(Calendar.DAY_OF_YEAR, -1);
isDateChanged = true; isDateChanged = true;
} }
} } //这里是对于12小时制时，凌晨11点和12点交替时对日期的更改
int newHour = mHourSpinner.getValue() % HOURS_IN_HALF_DAY + (mIsAm ? 0 : HOURS_IN_HALF_DAY); int newHour = mHourSpinner.getValue() % HOURS_IN_HALF_DAY + (mIsAm ? 0 : HOURS_IN_HALF_DAY);
//通过数字选择器对newHour的赋值
mDate.set(Calendar.HOUR_OF_DAY, newHour); mDate.set(Calendar.HOUR_OF_DAY, newHour);
//通过set函数将新的Hour值传给mDate
onDateTimeChanged(); onDateTimeChanged();
if (isDateChanged) { if (isDateChanged) {
setCurrentYear(cal.get(Calendar.YEAR)); setCurrentYear(cal.get(Calendar.YEAR));
@ -114,18 +125,22 @@ public class DateTimePicker extends FrameLayout {
} }
} }
}; };
private NumberPicker.OnValueChangeListener mOnMinuteChangedListener = new NumberPicker.OnValueChangeListener() { private NumberPicker.OnValueChangeListener mOnMinuteChangedListener = new NumberPicker.OnValueChangeListener() {
@Override @Override
//这里是对 分钟（Minute）改变的监听
public void onValueChange(NumberPicker picker, int oldVal, int newVal) { public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
int minValue = mMinuteSpinner.getMinValue(); int minValue = mMinuteSpinner.getMinValue();
int maxValue = mMinuteSpinner.getMaxValue(); int maxValue = mMinuteSpinner.getMaxValue();
int offset = 0; int offset = 0;
//设置offset，作为小时改变的一个记录数据
if (oldVal == maxValue && newVal == minValue) { if (oldVal == maxValue && newVal == minValue) {
offset += 1; offset += 1;
} else if (oldVal == minValue && newVal == maxValue) { } else if (oldVal == minValue && newVal == maxValue) {
offset -= 1; offset -= 1;
} }
//如果原值为59，新值为0，则offset加1
//如果原值为0，新值为59，则offset减1
if (offset != 0) { if (offset != 0) {
mDate.add(Calendar.HOUR_OF_DAY, offset); mDate.add(Calendar.HOUR_OF_DAY, offset);
mHourSpinner.setValue(getCurrentHour()); mHourSpinner.setValue(getCurrentHour());
@ -143,9 +158,10 @@ public class DateTimePicker extends FrameLayout {
onDateTimeChanged(); onDateTimeChanged();
} }
}; };
private NumberPicker.OnValueChangeListener mOnAmPmChangedListener = new NumberPicker.OnValueChangeListener() { private NumberPicker.OnValueChangeListener mOnAmPmChangedListener = new NumberPicker.OnValueChangeListener() {
@Override //对AM和PM的监听
@Override
public void onValueChange(NumberPicker picker, int oldVal, int newVal) { public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
mIsAm = !mIsAm; mIsAm = !mIsAm;
if (mIsAm) { if (mIsAm) {
@ -157,63 +173,66 @@ public class DateTimePicker extends FrameLayout {
onDateTimeChanged(); onDateTimeChanged();
} }
}; };
public interface OnDateTimeChangedListener { public interface OnDateTimeChangedListener {
void onDateTimeChanged(DateTimePicker view, int year, int month, void onDateTimeChanged(DateTimePicker view, int year, int month,
int dayOfMonth, int hourOfDay, int minute); int dayOfMonth, int hourOfDay, int minute);
} }
public DateTimePicker(Context context) { public DateTimePicker(Context context) {
this(context, System.currentTimeMillis()); this(context, System.currentTimeMillis());
} }//通过对数据库的访问，获取当前的系统时间
public DateTimePicker(Context context, long date) { public DateTimePicker(Context context, long date) {
this(context, date, DateFormat.is24HourFormat(context)); this(context, date, DateFormat.is24HourFormat(context));
} }//上面函数的得到的是一个天文数字（1970至今的秒数），需要DateFormat将其变得有意义
public DateTimePicker(Context context, long date, boolean is24HourView) { public DateTimePicker(Context context, long date, boolean is24HourView) {
super(context); super(context);
//获取系统时间
mDate = Calendar.getInstance(); mDate = Calendar.getInstance();
mInitialising = true; mInitialising = true;
mIsAm = getCurrentHourOfDay() >= HOURS_IN_HALF_DAY; mIsAm = getCurrentHourOfDay() >= HOURS_IN_HALF_DAY;
inflate(context, R.layout.datetime_picker, this); inflate(context, R.layout.datetime_picker, this);
//如果当前Activity里用到别的layout，比如对话框layout
//还要设置这个layout上的其他组件的内容，就必须用inflate()方法先将对话框的layout找出来
//然后再用findViewById()找到它上面的其它组件
mDateSpinner = (NumberPicker) findViewById(R.id.date); mDateSpinner = (NumberPicker) findViewById(R.id.date);
mDateSpinner.setMinValue(DATE_SPINNER_MIN_VAL); mDateSpinner.setMinValue(DATE_SPINNER_MIN_VAL);
mDateSpinner.setMaxValue(DATE_SPINNER_MAX_VAL); mDateSpinner.setMaxValue(DATE_SPINNER_MAX_VAL);
mDateSpinner.setOnValueChangedListener(mOnDateChangedListener); mDateSpinner.setOnValueChangedListener(mOnDateChangedListener);
mHourSpinner = (NumberPicker) findViewById(R.id.hour); mHourSpinner = (NumberPicker) findViewById(R.id.hour);
mHourSpinner.setOnValueChangedListener(mOnHourChangedListener); mHourSpinner.setOnValueChangedListener(mOnHourChangedListener);
mMinuteSpinner = (NumberPicker) findViewById(R.id.minute); mMinuteSpinner = (NumberPicker) findViewById(R.id.minute);
mMinuteSpinner.setMinValue(MINUT_SPINNER_MIN_VAL); mMinuteSpinner.setMinValue(MINUT_SPINNER_MIN_VAL);
mMinuteSpinner.setMaxValue(MINUT_SPINNER_MAX_VAL); mMinuteSpinner.setMaxValue(MINUT_SPINNER_MAX_VAL);
mMinuteSpinner.setOnLongPressUpdateInterval(100); mMinuteSpinner.setOnLongPressUpdateInterval(100);
mMinuteSpinner.setOnValueChangedListener(mOnMinuteChangedListener); mMinuteSpinner.setOnValueChangedListener(mOnMinuteChangedListener);
String[] stringsForAmPm = new DateFormatSymbols().getAmPmStrings(); String[] stringsForAmPm = new DateFormatSymbols().getAmPmStrings();
mAmPmSpinner = (NumberPicker) findViewById(R.id.amPm); mAmPmSpinner = (NumberPicker) findViewById(R.id.amPm);
mAmPmSpinner.setMinValue(AMPM_SPINNER_MIN_VAL); mAmPmSpinner.setMinValue(AMPM_SPINNER_MIN_VAL);
mAmPmSpinner.setMaxValue(AMPM_SPINNER_MAX_VAL); mAmPmSpinner.setMaxValue(AMPM_SPINNER_MAX_VAL);
mAmPmSpinner.setDisplayedValues(stringsForAmPm); mAmPmSpinner.setDisplayedValues(stringsForAmPm);
mAmPmSpinner.setOnValueChangedListener(mOnAmPmChangedListener); mAmPmSpinner.setOnValueChangedListener(mOnAmPmChangedListener);
// update controls to initial state // update controls to initial state
updateDateControl(); updateDateControl();
updateHourControl(); updateHourControl();
updateAmPmControl(); updateAmPmControl();
set24HourView(is24HourView); set24HourView(is24HourView);
// set to current time // set to current time
setCurrentDate(date); setCurrentDate(date);
setEnabled(isEnabled()); setEnabled(isEnabled());
// set the content descriptions // set the content descriptions
mInitialising = false; mInitialising = false;
} }
@Override @Override
public void setEnabled(boolean enabled) { public void setEnabled(boolean enabled) {
if (mIsEnabled == enabled) { if (mIsEnabled == enabled) {
@ -226,12 +245,12 @@ public class DateTimePicker extends FrameLayout {
mAmPmSpinner.setEnabled(enabled); mAmPmSpinner.setEnabled(enabled);
mIsEnabled = enabled; mIsEnabled = enabled;
} }
@Override @Override
public boolean isEnabled() { public boolean isEnabled() {
return mIsEnabled; return mIsEnabled;
} }
/** /**
* Get the current date in millis * Get the current date in millis
* *
@ -239,8 +258,8 @@ public class DateTimePicker extends FrameLayout {
*/ */
public long getCurrentDateInTimeMillis() { public long getCurrentDateInTimeMillis() {
return mDate.getTimeInMillis(); return mDate.getTimeInMillis();
} }//实现函数——得到当前的秒数
/** /**
* Set the current date * Set the current date
* *
@ -251,8 +270,8 @@ public class DateTimePicker extends FrameLayout {
cal.setTimeInMillis(date); cal.setTimeInMillis(date);
setCurrentDate(cal.get(Calendar.YEAR), cal.get(Calendar.MONTH), cal.get(Calendar.DAY_OF_MONTH), setCurrentDate(cal.get(Calendar.YEAR), cal.get(Calendar.MONTH), cal.get(Calendar.DAY_OF_MONTH),
cal.get(Calendar.HOUR_OF_DAY), cal.get(Calendar.MINUTE)); cal.get(Calendar.HOUR_OF_DAY), cal.get(Calendar.MINUTE));
} }//实现函数功能——设置当前的时间，参数是date
/** /**
* Set the current date * Set the current date
* *
@ -269,17 +288,18 @@ public class DateTimePicker extends FrameLayout {
setCurrentDay(dayOfMonth); setCurrentDay(dayOfMonth);
setCurrentHour(hourOfDay); setCurrentHour(hourOfDay);
setCurrentMinute(minute); setCurrentMinute(minute);
} }//实现函数功能——设置当前的时间，参数是各详细的变量
/** /**
* Get current year * Get current year
* *
* @return The current year * @return The current year
*/ */
//下面是得到year、month、day等值
public int getCurrentYear() { public int getCurrentYear() {
return mDate.get(Calendar.YEAR); return mDate.get(Calendar.YEAR);
} }
/** /**
* Set current year * Set current year
* *
@ -293,7 +313,7 @@ public class DateTimePicker extends FrameLayout {
updateDateControl(); updateDateControl();
onDateTimeChanged(); onDateTimeChanged();
} }
/** /**
* Get current month in the year * Get current month in the year
* *
@ -302,7 +322,7 @@ public class DateTimePicker extends FrameLayout {
public int getCurrentMonth() { public int getCurrentMonth() {
return mDate.get(Calendar.MONTH); return mDate.get(Calendar.MONTH);
} }
/** /**
* Set current month in the year * Set current month in the year
* *
@ -316,7 +336,7 @@ public class DateTimePicker extends FrameLayout {
updateDateControl(); updateDateControl();
onDateTimeChanged(); onDateTimeChanged();
} }
/** /**
* Get current day of the month * Get current day of the month
* *
@ -325,7 +345,7 @@ public class DateTimePicker extends FrameLayout {
public int getCurrentDay() { public int getCurrentDay() {
return mDate.get(Calendar.DAY_OF_MONTH); return mDate.get(Calendar.DAY_OF_MONTH);
} }
/** /**
* Set current day of the month * Set current day of the month
* *
@ -339,7 +359,7 @@ public class DateTimePicker extends FrameLayout {
updateDateControl(); updateDateControl();
onDateTimeChanged(); onDateTimeChanged();
} }
/** /**
* Get current hour in 24 hour mode, in the range (0~23) * Get current hour in 24 hour mode, in the range (0~23)
* @return The current hour in 24 hour mode * @return The current hour in 24 hour mode
@ -347,7 +367,7 @@ public class DateTimePicker extends FrameLayout {
public int getCurrentHourOfDay() { public int getCurrentHourOfDay() {
return mDate.get(Calendar.HOUR_OF_DAY); return mDate.get(Calendar.HOUR_OF_DAY);
} }
private int getCurrentHour() { private int getCurrentHour() {
if (mIs24HourView){ if (mIs24HourView){
return getCurrentHourOfDay(); return getCurrentHourOfDay();
@ -360,7 +380,7 @@ public class DateTimePicker extends FrameLayout {
} }
} }
} }
/** /**
* Set current hour in 24 hour mode, in the range (0~23) * Set current hour in 24 hour mode, in the range (0~23)
* *
@ -388,7 +408,7 @@ public class DateTimePicker extends FrameLayout {
mHourSpinner.setValue(hourOfDay); mHourSpinner.setValue(hourOfDay);
onDateTimeChanged(); onDateTimeChanged();
} }
/** /**
* Get currentMinute * Get currentMinute
* *
@ -397,7 +417,7 @@ public class DateTimePicker extends FrameLayout {
public int getCurrentMinute() { public int getCurrentMinute() {
return mDate.get(Calendar.MINUTE); return mDate.get(Calendar.MINUTE);
} }
/** /**
* Set current minute * Set current minute
*/ */
@ -409,14 +429,14 @@ public class DateTimePicker extends FrameLayout {
mDate.set(Calendar.MINUTE, minute); mDate.set(Calendar.MINUTE, minute);
onDateTimeChanged(); onDateTimeChanged();
} }
/** /**
* @return true if this is in 24 hour view else false. * @return true if this is in 24 hour view else false.
*/ */
public boolean is24HourView () { public boolean is24HourView () {
return mIs24HourView; return mIs24HourView;
} }
/** /**
* Set whether in 24 hour or AM/PM mode. * Set whether in 24 hour or AM/PM mode.
* *
@ -433,7 +453,7 @@ public class DateTimePicker extends FrameLayout {
setCurrentHour(hour); setCurrentHour(hour);
updateAmPmControl(); updateAmPmControl();
} }
private void updateDateControl() { private void updateDateControl() {
Calendar cal = Calendar.getInstance(); Calendar cal = Calendar.getInstance();
cal.setTimeInMillis(mDate.getTimeInMillis()); cal.setTimeInMillis(mDate.getTimeInMillis());
@ -446,8 +466,8 @@ public class DateTimePicker extends FrameLayout {
mDateSpinner.setDisplayedValues(mDateDisplayValues); mDateSpinner.setDisplayedValues(mDateDisplayValues);
mDateSpinner.setValue(DAYS_IN_ALL_WEEK / 2); mDateSpinner.setValue(DAYS_IN_ALL_WEEK / 2);
mDateSpinner.invalidate(); mDateSpinner.invalidate();
} }// 对于星期几的算法
private void updateAmPmControl() { private void updateAmPmControl() {
if (mIs24HourView) { if (mIs24HourView) {
mAmPmSpinner.setVisibility(View.GONE); mAmPmSpinner.setVisibility(View.GONE);
@ -455,9 +475,9 @@ public class DateTimePicker extends FrameLayout {
int index = mIsAm ? Calendar.AM : Calendar.PM; int index = mIsAm ? Calendar.AM : Calendar.PM;
mAmPmSpinner.setValue(index); mAmPmSpinner.setValue(index);
mAmPmSpinner.setVisibility(View.VISIBLE); mAmPmSpinner.setVisibility(View.VISIBLE);
} }// 对于上下午操作的算法
} }
private void updateHourControl() { private void updateHourControl() {
if (mIs24HourView) { if (mIs24HourView) {
mHourSpinner.setMinValue(HOUR_SPINNER_MIN_VAL_24_HOUR_VIEW); mHourSpinner.setMinValue(HOUR_SPINNER_MIN_VAL_24_HOUR_VIEW);
@ -465,9 +485,9 @@ public class DateTimePicker extends FrameLayout {
} else { } else {
mHourSpinner.setMinValue(HOUR_SPINNER_MIN_VAL_12_HOUR_VIEW); mHourSpinner.setMinValue(HOUR_SPINNER_MIN_VAL_12_HOUR_VIEW);
mHourSpinner.setMaxValue(HOUR_SPINNER_MAX_VAL_12_HOUR_VIEW); mHourSpinner.setMaxValue(HOUR_SPINNER_MAX_VAL_12_HOUR_VIEW);
} }// 对与小时的算法
} }
/** /**
* Set the callback that indicates the 'Set' button has been pressed. * Set the callback that indicates the 'Set' button has been pressed.
* @param callback the callback, if null will do nothing * @param callback the callback, if null will do nothing
@ -475,11 +495,11 @@ public class DateTimePicker extends FrameLayout {
public void setOnDateTimeChangedListener(OnDateTimeChangedListener callback) { public void setOnDateTimeChangedListener(OnDateTimeChangedListener callback) {
mOnDateTimeChangedListener = callback; mOnDateTimeChangedListener = callback;
} }
private void onDateTimeChanged() { private void onDateTimeChanged() {
if (mOnDateTimeChangedListener != null) { if (mOnDateTimeChangedListener != null) {
mOnDateTimeChangedListener.onDateTimeChanged(this, getCurrentYear(), mOnDateTimeChangedListener.onDateTimeChanged(this, getCurrentYear(),
getCurrentMonth(), getCurrentDay(), getCurrentHourOfDay(), getCurrentMinute()); getCurrentMonth(), getCurrentDay(), getCurrentHourOfDay(), getCurrentMinute());
} }
} }
} }

43
src/Notes-master1/app/src/main/java/net/micode/notes/ui/DateTimePickerDialog.java
Unescape View File

@ -15,35 +15,42 @@
*/ */
package net.micode.notes.ui; package net.micode.notes.ui;
import java.util.Calendar; import java.util.Calendar;
import net.micode.notes.R; import net.micode.notes.R;
import net.micode.notes.ui.DateTimePicker; import net.micode.notes.ui.DateTimePicker;
import net.micode.notes.ui.DateTimePicker.OnDateTimeChangedListener; import net.micode.notes.ui.DateTimePicker.OnDateTimeChangedListener;
import android.app.AlertDialog; import android.app.AlertDialog;
import android.content.Context; import android.content.Context;
import android.content.DialogInterface; import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener; import android.content.DialogInterface.OnClickListener;
import android.text.format.DateFormat; import android.text.format.DateFormat;
import android.text.format.DateUtils; import android.text.format.DateUtils;
public class DateTimePickerDialog extends AlertDialog implements OnClickListener { public class DateTimePickerDialog extends AlertDialog implements OnClickListener {
private Calendar mDate = Calendar.getInstance(); private Calendar mDate = Calendar.getInstance();
//创建一个Calendar类型的变量 mDate，方便时间的操作
private boolean mIs24HourView; private boolean mIs24HourView;
private OnDateTimeSetListener mOnDateTimeSetListener; private OnDateTimeSetListener mOnDateTimeSetListener;
//声明一个时间日期滚动选择控件 mOnDateTimeSetListener
private DateTimePicker mDateTimePicker; private DateTimePicker mDateTimePicker;
//DateTimePicker控件，控件一般用于让用户可以从日期列表中选择单个值。
//运行时，单击控件边上的下拉箭头，会显示为两个部分：一个下拉列表，一个用于选择日期的
public interface OnDateTimeSetListener { public interface OnDateTimeSetListener {
void OnDateTimeSet(AlertDialog dialog, long date); void OnDateTimeSet(AlertDialog dialog, long date);
} }
public DateTimePickerDialog(Context context, long date) { public DateTimePickerDialog(Context context, long date) {
//对该界面对话框的实例化
super(context); super(context);
//对数据库的操作
mDateTimePicker = new DateTimePicker(context); mDateTimePicker = new DateTimePicker(context);
setView(mDateTimePicker); setView(mDateTimePicker);
//添加一个子视图
mDateTimePicker.setOnDateTimeChangedListener(new OnDateTimeChangedListener() { mDateTimePicker.setOnDateTimeChangedListener(new OnDateTimeChangedListener() {
public void onDateTimeChanged(DateTimePicker view, int year, int month, public void onDateTimeChanged(DateTimePicker view, int year, int month,
int dayOfMonth, int hourOfDay, int minute) { int dayOfMonth, int hourOfDay, int minute) {
@ -52,26 +59,31 @@ public class DateTimePickerDialog extends AlertDialog implements OnClickListener
mDate.set(Calendar.DAY_OF_MONTH, dayOfMonth); mDate.set(Calendar.DAY_OF_MONTH, dayOfMonth);
mDate.set(Calendar.HOUR_OF_DAY, hourOfDay); mDate.set(Calendar.HOUR_OF_DAY, hourOfDay);
mDate.set(Calendar.MINUTE, minute); mDate.set(Calendar.MINUTE, minute);
//将视图中的各选项设置为系统当前时间
updateTitle(mDate.getTimeInMillis()); updateTitle(mDate.getTimeInMillis());
} }
}); });
mDate.setTimeInMillis(date); mDate.setTimeInMillis(date);
//得到系统时间
mDate.set(Calendar.SECOND, 0); mDate.set(Calendar.SECOND, 0);
//将秒数设置为0
mDateTimePicker.setCurrentDate(mDate.getTimeInMillis()); mDateTimePicker.setCurrentDate(mDate.getTimeInMillis());
setButton(context.getString(R.string.datetime_dialog_ok), this); setButton(context.getString(R.string.datetime_dialog_ok), this);
setButton2(context.getString(R.string.datetime_dialog_cancel), (OnClickListener)null); setButton2(context.getString(R.string.datetime_dialog_cancel), (OnClickListener)null);
//设置按钮
set24HourView(DateFormat.is24HourFormat(this.getContext())); set24HourView(DateFormat.is24HourFormat(this.getContext()));
//时间标准化打印
updateTitle(mDate.getTimeInMillis()); updateTitle(mDate.getTimeInMillis());
} }
public void set24HourView(boolean is24HourView) { public void set24HourView(boolean is24HourView) {
mIs24HourView = is24HourView; mIs24HourView = is24HourView;
} }
public void setOnDateTimeSetListener(OnDateTimeSetListener callBack) { public void setOnDateTimeSetListener(OnDateTimeSetListener callBack) {
mOnDateTimeSetListener = callBack; mOnDateTimeSetListener = callBack;
} }//将时间日期滚动选择控件实例化
private void updateTitle(long date) { private void updateTitle(long date) {
int flag = int flag =
DateUtils.FORMAT_SHOW_YEAR | DateUtils.FORMAT_SHOW_YEAR |
@ -79,12 +91,13 @@ public class DateTimePickerDialog extends AlertDialog implements OnClickListener
DateUtils.FORMAT_SHOW_TIME; DateUtils.FORMAT_SHOW_TIME;
flag |= mIs24HourView ? DateUtils.FORMAT_24HOUR : DateUtils.FORMAT_24HOUR; flag |= mIs24HourView ? DateUtils.FORMAT_24HOUR : DateUtils.FORMAT_24HOUR;
setTitle(DateUtils.formatDateTime(this.getContext(), date, flag)); setTitle(DateUtils.formatDateTime(this.getContext(), date, flag));
} }//android开发中常见日期管理工具类（API）——DateUtils：按照上下午显示时间
public void onClick(DialogInterface arg0, int arg1) { public void onClick(DialogInterface arg0, int arg1) {
if (mOnDateTimeSetListener != null) { if (mOnDateTimeSetListener != null) {
mOnDateTimeSetListener.OnDateTimeSet(this, mDate.getTimeInMillis()); mOnDateTimeSetListener.OnDateTimeSet(this, mDate.getTimeInMillis());
} }
} }//第一个参数arg0是接收到点击事件的对话框
//第二个参数arg1是该对话框上的按钮
} }

24
src/Notes-master1/app/src/main/java/net/micode/notes/ui/DropdownMenu.java
Unescape View File

@ -15,7 +15,7 @@
*/ */
package net.micode.notes.ui; package net.micode.notes.ui;
import android.content.Context; import android.content.Context;
import android.view.Menu; import android.view.Menu;
import android.view.MenuItem; import android.view.MenuItem;
@ -24,38 +24,42 @@ import android.view.View.OnClickListener;
import android.widget.Button; import android.widget.Button;
import android.widget.PopupMenu; import android.widget.PopupMenu;
import android.widget.PopupMenu.OnMenuItemClickListener; import android.widget.PopupMenu.OnMenuItemClickListener;
import net.micode.notes.R; import net.micode.notes.R;
public class DropdownMenu { public class DropdownMenu {
private Button mButton; private Button mButton;
private PopupMenu mPopupMenu; private PopupMenu mPopupMenu;
//声明一个下拉菜单
private Menu mMenu; private Menu mMenu;
public DropdownMenu(Context context, Button button, int menuId) { public DropdownMenu(Context context, Button button, int menuId) {
mButton = button; mButton = button;
mButton.setBackgroundResource(R.drawable.dropdown_icon); mButton.setBackgroundResource(R.drawable.dropdown_icon);
//设置这个view的背景
mPopupMenu = new PopupMenu(context, mButton); mPopupMenu = new PopupMenu(context, mButton);
mMenu = mPopupMenu.getMenu(); mMenu = mPopupMenu.getMenu();
mPopupMenu.getMenuInflater().inflate(menuId, mMenu); mPopupMenu.getMenuInflater().inflate(menuId, mMenu);
//MenuInflater是用来实例化Menu目录下的Menu布局文件
//根据ID来确认menu的内容选项
mButton.setOnClickListener(new OnClickListener() { mButton.setOnClickListener(new OnClickListener() {
public void onClick(View v) { public void onClick(View v) {
mPopupMenu.show(); mPopupMenu.show();
} }
}); });
} }
public void setOnDropdownMenuItemClickListener(OnMenuItemClickListener listener) { public void setOnDropdownMenuItemClickListener(OnMenuItemClickListener listener) {
if (mPopupMenu != null) { if (mPopupMenu != null) {
mPopupMenu.setOnMenuItemClickListener(listener); mPopupMenu.setOnMenuItemClickListener(listener);
} }//设置菜单的监听
} }
public MenuItem findItem(int id) { public MenuItem findItem(int id) {
return mMenu.findItem(id); return mMenu.findItem(id);
} }//对于菜单选项的初始化，根据索引搜索菜单需要的选项
public void setTitle(CharSequence title) { public void setTitle(CharSequence title) {
mButton.setText(title); mButton.setText(title);
} }//布局文件，设置标题
} }

47
src/Notes-master1/app/src/main/java/net/micode/notes/ui/FoldersListAdapter.java
Unescape View File

@ -15,7 +15,7 @@
*/ */
package net.micode.notes.ui; package net.micode.notes.ui;
import android.content.Context; import android.content.Context;
import android.database.Cursor; import android.database.Cursor;
import android.view.View; import android.view.View;
@ -23,31 +23,36 @@ import android.view.ViewGroup;
import android.widget.CursorAdapter; import android.widget.CursorAdapter;
import android.widget.LinearLayout; import android.widget.LinearLayout;
import android.widget.TextView; import android.widget.TextView;
import net.micode.notes.R; import net.micode.notes.R;
import net.micode.notes.data.Notes; import net.micode.notes.data.Notes;
import net.micode.notes.data.Notes.NoteColumns; import net.micode.notes.data.Notes.NoteColumns;
public class FoldersListAdapter extends CursorAdapter { public class FoldersListAdapter extends CursorAdapter {
//CursorAdapter是Cursor和ListView的接口
//FoldersListAdapter继承了CursorAdapter的类
//主要作用是便签数据库和用户的交互
//这里就是用folder（文件夹）的形式展现给用户
public static final String [] PROJECTION = { public static final String [] PROJECTION = {
NoteColumns.ID, NoteColumns.ID,
NoteColumns.SNIPPET NoteColumns.SNIPPET
}; };//调用数据库中便签的ID和片段
public static final int ID_COLUMN = 0; public static final int ID_COLUMN = 0;
public static final int NAME_COLUMN = 1; public static final int NAME_COLUMN = 1;
public FoldersListAdapter(Context context, Cursor c) { public FoldersListAdapter(Context context, Cursor c) {
super(context, c); super(context, c);
// TODO Auto-generated constructor stub // TODO Auto-generated constructor stub
} }//数据库操作
@Override @Override
public View newView(Context context, Cursor cursor, ViewGroup parent) { public View newView(Context context, Cursor cursor, ViewGroup parent) {
return new FolderListItem(context); //ViewGroup是容器
} return new FolderListItem(context);
}//创建一个文件夹，对于各文件夹中子标签的初始化
@Override @Override
public void bindView(View view, Context context, Cursor cursor) { public void bindView(View view, Context context, Cursor cursor) {
if (view instanceof FolderListItem) { if (view instanceof FolderListItem) {
@ -55,26 +60,28 @@ public class FoldersListAdapter extends CursorAdapter {
.getString(R.string.menu_move_parent_folder) : cursor.getString(NAME_COLUMN); .getString(R.string.menu_move_parent_folder) : cursor.getString(NAME_COLUMN);
((FolderListItem) view).bind(folderName); ((FolderListItem) view).bind(folderName);
} }
} }//将各个布局文件绑定起来
public String getFolderName(Context context, int position) { public String getFolderName(Context context, int position) {
Cursor cursor = (Cursor) getItem(position); Cursor cursor = (Cursor) getItem(position);
return (cursor.getLong(ID_COLUMN) == Notes.ID_ROOT_FOLDER) ? context return (cursor.getLong(ID_COLUMN) == Notes.ID_ROOT_FOLDER) ? context
.getString(R.string.menu_move_parent_folder) : cursor.getString(NAME_COLUMN); .getString(R.string.menu_move_parent_folder) : cursor.getString(NAME_COLUMN);
} }//根据数据库中标签的ID得到标签的各项内容
private class FolderListItem extends LinearLayout { private class FolderListItem extends LinearLayout {
private TextView mName; private TextView mName;
public FolderListItem(Context context) { public FolderListItem(Context context) {
super(context); super(context);
//操作数据库
inflate(context, R.layout.folder_list_item, this); inflate(context, R.layout.folder_list_item, this);
//根据布局文件的名字等信息将其找出来
mName = (TextView) findViewById(R.id.tv_folder_name); mName = (TextView) findViewById(R.id.tv_folder_name);
} }
public void bind(String name) { public void bind(String name) {
mName.setText(name); mName.setText(name);
} }
} }
} }

504
src/Notes-master1/app/src/main/java/net/micode/notes/ui/NoteEditActivity.java
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